<template>
  <el-form label-width="100px">
    <el-form-item label="SPU名称">
      <el-input
        placeholder="请你输入SPU名称"
        v-model="SpuParams.spuName"
      ></el-input>
    </el-form-item>
    <el-form-item label="SPU品牌">
      <el-select v-model="SpuParams.tmId">
        <el-option
          v-for="(item, index) in MYAllTradeMark"
          :key="index"
          :label="item.tmName"
          :value="item.id"
        ></el-option>
      </el-select>
    </el-form-item>
    <el-form-item label="SPU描述">
      <el-input
        type="textarea"
        placeholder="请你输入SPU描述"
        v-model="SpuParams.description"
      ></el-input>
    </el-form-item>
    <el-form-item label="SPU图片">
      <el-upload
        v-model:file-list="imgList"
        action="/api/admin/product/fileUpload"
        list-type="picture-card"
        :on-preview="handlePictureCardPreview"
        :on-remove="handleRemove"
        :before-upload="handlerUpload"
      >
        <el-icon><Plus /></el-icon>
      </el-upload>

      <el-dialog v-model="dialogVisible">
        <img w-full :src="dialogImageUrl" alt="Preview Image" />
      </el-dialog>
    </el-form-item>
    <el-form-item label="SPU销售属性" size="normal">
      <!-- 展示销售属性的下拉菜单 -->
      <el-select style="width: 200px" v-model="saleAttrAndValueName">
        <el-option
          :value="`${item.id} : ${item.name}`"
          v-for="(item, index) in unSelectSaleAttr"
          :key="index"
          :label="item.name"
        ></el-option>
      </el-select>
      <el-button
        style="margin-left: 10px"
        type="primary"
        size="default"
        icon="Plus"
        @click="addSaleAttr"
        :disabled="unSelectSaleAttr.length > 0 ? false : true"
      >
        添加属性
      </el-button>
      <!-- table展示销售属性与属性值的地方 -->
      <el-table border style="margin: 10px 0px" :data="saleAttr">
        <el-table-column
          label="序号"
          type="index"
          align="center"
          width="80px"
        ></el-table-column>
        <el-table-column
          label="销售属性名字"
          width="120px"
          prop="saleAttrName"
        ></el-table-column>
        <el-table-column label="销售属性值">
          <!-- row:即为当前SPU已有的销售属性对象 -->
          <template #="{ row }">
            <el-tag
              class="mx-1"
              closable
              style="margin: 0px 5px"
              @close="row.spuSaleAttrValueList.splice(index, 1)"
              v-for="(item, index) in row.spuSaleAttrValueList"
              :key="index"
            >
              {{ item.saleAttrValueName }}
            </el-tag>

            <el-input
              size="small"
              style="width: 100px"
              @blur="toLook(row)"
              placeholder="请输入属性值"
              v-model="row.saleAttrValue"
              v-if="row.flag == true"
            ></el-input>

            <el-button
              @click="toEdit(row)"
              v-else
              type="primary"
              size="small"
              icon="Plus"
            ></el-button>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="120px">
          <template #="{ $index }">
            <el-button
              type="primary"
              size="small"
              icon="Delete"
              @click="saleAttr.splice($index, 1)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-form-item>
    <el-form-item>
      <el-button
        :disabled="saleAttr.length > 0 ? false : true"
        type="primary"
        size="default"
        @click="save"
        >保存</el-button
      >
      <el-button type="primary" size="default" @click="cancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script setup lang="ts">
import type {
  SpuData,
  AllTradeMark,
  SpuHasImg,
  SaleAttrResponseData,
  HasSaleAttrResponseData,
  Trademark,
  SpuImg,
  SaleAttr,
  HasSaleAttr,
  SaleAttrValue,
} from "@/api/product/spu/type";
import {
  reqAllTradeMark,
  reqSpuImageList,
  reqSpuHasSaleAttr,
  reqAllSaleAttr,
  reqAddOrUpdateSpu,
} from "@/api/product/spu/index";

import { ElMessage } from "element-plus";

import { ref, computed } from "vue";

let $emit = defineEmits(["changeScene"]);
//取消按钮的回调
const cancel = () => {
  $emit("changeScene", {
    flag: 0,
    params: "update",
  });
};

let MYAllTradeMark = ref<Trademark[]>([]);
let imgList = ref<SpuImg[]>([]);
let saleAttr = ref<SaleAttr[]>([]);
let allSaleAttr = ref<HasSaleAttr[]>([]);

//存储已有的SPU对象
let SpuParams = ref<SpuData>({
  category3Id: "", //收集三级分类的ID
  spuName: "", //SPU的名字
  description: "", //SPU的描述
  tmId: "", //品牌的ID
  spuImageList: [],
  spuSaleAttrList: [],
});

let saleAttrAndValueName = ref<string>("");

//子组件书写一个方法
const initHasSpuData = async (spu: SpuData) => {
  console.log(spu, "spu");

  //存储已有的SPU对象,将来在模板中展示
  SpuParams.value = spu;
  //spu:即为父组件传递过来的已有的SPU对象[不完整]
  //获取全部品牌的数据
  let result: AllTradeMark = await reqAllTradeMark();
  //获取某一个品牌旗下全部售卖商品的图片
  let result1: SpuHasImg = await reqSpuImageList(spu.id as number);
  //获取已有的SPU销售属性的数据
  let result2: SaleAttrResponseData = await reqSpuHasSaleAttr(spu.id as number);
  //获取整个项目全部SPU的销售属性
  let result3: HasSaleAttrResponseData = await reqAllSaleAttr();

  //存储全部品牌的数据
  MYAllTradeMark.value = result.data;
  //SPU对应商品图片
  imgList.value = result1.data.map((item) => {
    return {
      name: item.imgName,
      url: item.imgUrl,
    };
  });
  //存储已有的SPU的销售属性
  saleAttr.value = result2.data;
  //存储全部的销售属性
  allSaleAttr.value = result3.data;
};

//控制对话框的显示与隐藏
let dialogVisible = ref<boolean>(false);
//存储预览图片地址
let dialogImageUrl = ref<string>("");
//照片墙点击预览按钮的时候触发的钩子
const handlePictureCardPreview = (file: any) => {
  dialogImageUrl.value = file.url;
  //对话框弹出来
  dialogVisible.value = true;
};

const handleRemove = () => {
  console.log("删除");
};

//照片钱上传成功之前的钩子约束文件的大小与类型
const handlerUpload = (file: any) => {
  if (
    file.type == "image/png" ||
    file.type == "image/jpeg" ||
    file.type == "image/gif"
  ) {
    if (file.size / 1024 / 1024 < 3) {
      return true;
    } else {
      ElMessage({
        type: "error",
        message: "上传文件务必小于3M",
      });
      return false;
    }
  } else {
    ElMessage({
      type: "error",
      message: "上传文件务必PNG|JPG|GIF",
    });
    return false;
  }
};

let unSelectSaleAttr = computed(() => {
  let unSelectArr = allSaleAttr.value.filter((item) => {
    return saleAttr.value.every((item1) => {
      return item.name != item1.saleAttrName;
    });
  });

  return unSelectArr;
});

const addSaleAttr = () => {
  /*
    "baseSaleAttrId": number,
    "saleAttrName": string,
    "spuSaleAttrValueList": SpuSaleAttrValueList
    */
  const [baseSaleAttrId, saleAttrName] = saleAttrAndValueName.value.split(":");
  let newSaleAttr: SaleAttr = {
    baseSaleAttrId,
    saleAttrName,
    spuSaleAttrValueList: [],
  };
  //追加到数组当中
  saleAttr.value.push(newSaleAttr);
  //清空收集的数据
  saleAttrAndValueName.value = "";
};

//属性值按钮的点击事件
const toEdit = (row: SaleAttr) => {
  //点击按钮的时候,input组件不就不出来->编辑模式
  row.flag = true;
  row.saleAttrValue = "";
};

//表单元素失却焦点的事件回调
const toLook = (row: SaleAttr) => {
  //整理收集的属性的ID与属性值的名字
  const { baseSaleAttrId, saleAttrValue } = row;
  //整理成服务器需要的属性值形式
  let newSaleAttrValue: SaleAttrValue = {
    baseSaleAttrId,
    saleAttrValueName: saleAttrValue as string,
  };

  //非法情况判断
  if ((saleAttrValue as string).trim() == "") {
    ElMessage({
      type: "error",
      message: "属性值不能为空的",
    });
    return;
  }
  //判断属性值是否在数组当中存在
  let repeat = row.spuSaleAttrValueList.find((item) => {
    return item.saleAttrValueName == saleAttrValue;
  });

  if (repeat) {
    ElMessage({
      type: "error",
      message: "属性值重复",
    });
    return;
  }

  //追加新的属性值对象
  row.spuSaleAttrValueList.push(newSaleAttrValue);
  //切换为查看模式
  row.flag = false;
};

//保存按钮的回调
const save = async () => {
  //整理参数
  //发请求:添加SPU|更新已有的SPU
  //成功
  //失败
  //1:照片墙的数据
  SpuParams.value.spuImageList = imgList.value.map((item: any) => {
    return {
      imgName: item.name, //图片的名字
      imgUrl: (item.response && item.response.data) || item.url,
    };
  });
  //2:整理销售属性的数据
  SpuParams.value.spuSaleAttrList = saleAttr.value;
  let result = await reqAddOrUpdateSpu(SpuParams.value);
  if (result.code == 200) {
    ElMessage({
      type: "success",
      message: SpuParams.value.id ? "更新成功" : "添加成功",
    });
    //通知父组件切换场景为0
    $emit("changeScene", {
      flag: 0,
      params: SpuParams.value.id ? "update" : "add",
    });
  } else {
    ElMessage({
      type: "success",
      message: SpuParams.value.id ? "更新成功" : "添加成功",
    });
  }
};

//添加一个新的SPU初始化请求方法
const initAddSpu = async (c3Id: number | string) => {
  //清空数据
  Object.assign(SpuParams.value, {
    category3Id: "", //收集三级分类的ID
    spuName: "", //SPU的名字
    description: "", //SPU的描述
    tmId: "", //品牌的ID
    spuImageList: [],
    spuSaleAttrList: [],
  });
  //清空照片
  imgList.value = [];
  //清空销售属性
  saleAttr.value = [];
  saleAttrAndValueName.value = "";
  //存储三级分类的ID
  SpuParams.value.category3Id = c3Id;
  //获取全部品牌的数据
  let result: AllTradeMark = await reqAllTradeMark();
  let result1: HasSaleAttrResponseData = await reqAllSaleAttr();
  //存储数据
  MYAllTradeMark.value = result.data;
  allSaleAttr.value = result1.data;
};

defineExpose({ initHasSpuData, initAddSpu });
</script>

<style scoped>
</style>